Camera optical lens

Abstract

A camera optical lens includes five-piece lenses, from an object side to an image side. The camera optical lens satisfies conditions of −3.50≤f2/f1≤−1.80, 1.00≤(R7+R8)/(R7−R8)≤1.75, 1.30≤d6/d4≤2.00, 5.00≤(R5+R6)/(R5−R6)≤20.00 and −5.00≤R9/R10≤−1.50. Here f1, f2 denote a focal length of the first lens and the second lens; R5, R6 denote a curvature radius of an object-side surface and an image-side surface of the third lens; R7, R8 denote a curvature radius of an object-side surface and an image-side of the fourth lens; R9, R10 denote a curvature radius of an object-side surface and an image-side surface of the fifth lens; d4 denotes an on-axis distance from an image-side surface of the second lens to the object-side surface of the third lens. The camera optical lens of the present disclosure has excellent optical performances, and meanwhile can meet design requirements of a large aperture, a wide angle and ultra-thin.

What is claimed is: 
     
       1. A camera optical lens comprising five-piece lenses, from an object side to an image side, the five-piece lenses are:
 a first lens having a positive refractive power; 
 a second lens having a negative refractive power; 
 a third lens having a negative refractive power; 
 a fourth lens having a positive refractive power; and 
 a fifth lens having a negative refractive power; 
 wherein the camera optical lens satisfies following conditions:
   −3.50≤ f 2/ f 1≤−1.80;
 
   1.00≤( R 7+ R 8)/( R 7 −R 8)≤1.75;
 
   1.30≤ d 6/ d 4≤2.00;
 
   5.00≤( R 5+ R 6)/( R 5 −R 6)≤20.00;
 
   −5.00≤ R 9/ R 10≤−1.50; and
 
     FNO≤ 2.05; 
 
 where 
 f1 denotes a focal length of the first lens; 
 f2 denotes a focal length of the second lens; 
 R5 denotes a curvature radius of an object-side surface of the third lens; 
 R6 denotes a curvature radius of an image-side surface of the third lens; 
 R7 denotes a curvature radius of an object-side surface of the fourth lens; 
 R8 denotes a curvature radius of an image-side surface of the fourth lens; 
 R9 denotes a curvature radius of an object-side surface of the fifth lens; 
 R10 denotes a curvature radius of an image-side surface of the fifth lens; 
 d4 denotes an on-axis distance from an image-side surface of the second lens to the object-side surface of the third lens; 
 d6 denotes an on-axis distance from the image-side surface of the third lens to the object-side surface of the fourth lens; and 
 FNO denotes an F number of the camera optical lens. 
 
     
     
       2. The camera optical lens according to  claim 1  further satisfying following condition: 4.00≤d1/d2≤8.00;
 where 
 d1 denotes an on-axis thickness of the first lens; and 
 d2 denotes an on-axis distance from an image-side surface of the first lens to an object-side surface of the second lens. 
 
     
     
       3. The camera optical lens according to  claim 1  further satisfying following conditions:
   0.37≤ f 1/ f≤ 1.30;
 
   −3.10≤( R 1+ R 2)/( R 1 −R 2)≤−0.71; and
 
   0.06≤ d 1/ TTL≤ 0.21;
 
 where 
 f denotes a focal length of the camera optical lens; 
 R1 denotes a curvature radius of an object-side surface of the first lens; 
 R2 denotes a curvature radius of an image-side surface of the first lens; 
 d1 denotes an on-axis thickness of the first lens; and 
 TTL denotes a total optical length from the object-side surface of the first lens to an image surface of the camera optical lens along an optical axis. 
 
     
     
       4. The camera optical lens according to  claim 1  further satisfying following conditions:
   −5.90≤ f 2/ f≤− 0.91;
 
   −1.59≤( R 3+ R 4)/( R 3 −R 4)≤1.96; and
 
   0.03≤ d 3/ TTL≤ 0.09;
 
 where 
 f denotes a focal length of the camera optical lens; 
 R3 denotes a curvature radius of an object-side surface of the second lens; 
 R4 denotes a curvature radius of the image-side surface of the second lens; 
 d3 denotes an on-axis thickness of the second lens; and 
 TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis. 
 
     
     
       5. The camera optical lens according to  claim 1  further satisfying following conditions:
   −92.61( f 3/ f≤− 9.93; and
 
   0.03≤ d 5/ TTL≤ 0.11;
 
 where 
 f denotes a focal length of the camera optical lens; 
 f3 denotes a focal length of the third lens; 
 d5 denotes an on-axis thickness of the third lens; and 
 TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis. 
 
     
     
       6. The camera optical lens according to  claim 1  further satisfying following conditions:
   0.35≤ f 4/ f≤ 1.35; and
 
   0.05≤ d 7/ TTL≤ 0.21;
 
 where 
 f denotes a focal length of the camera optical lens; 
 f4 denotes a focal length of the fourth lens; 
 d7 denotes an on-axis thickness of the fourth lens L4; and 
 TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis. 
 
     
     
       7. The camera optical lens according to  claim 1  further satisfying following conditions:
   −1.30≤ f 5/ f≤− 0.37;
 
   0.13≤( R 9+ R 10)/( R 9 −R 10)≤1.00; and
 
   0.04≤ d 9/ TTL≤ 0.13;
 
 where 
 f denotes a focal length of the camera optical lens; 
 f5 denotes a focal length of the fifth lens; 
 d9 denotes an on-axis thickness of the fifth lens; and 
 TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis. 
 
     
     
       8. The camera optical lens according to  claim 1  further satisfying following condition:
     TTL/IH≤ 1.36; 
 where 
 IH denotes an image height of the camera optical lens; and 
 TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis. 
 
     
     
       9. The camera optical lens according to  claim 1  further satisfying following condition:
     FOV: 79.00°;
 
 where 
 FOV denotes an field of view of the camera optical lens.